Repair
8
3A9013A
Reassemble the Pump Lower
16
18
1
2
17*
30*
Orient so the end with the ball cavity (S, see F
IG
. 4)
faces the ball (17*).
Lubricate.
1
2
2
4493a
1.
If it was necessary to remove the piston ball guide
(9) from the displacement rod (1), clean the threads
of the rod and ball guide, and apply anti seize (19*)
to threads. Screw the ball housing onto the rod,
handtight. Place the flats of the ball guide in a vise
and torque as noted in F
IG
. 4.
2.
See F
IG
. 4. Install the piston packings on the piston
(15) in the correct order for your lower, see Repair
Kits, page 12. Install the v-packings (P) one at a
time with the lips facing up.
NOTE: To convert the lower to a different packing
material, see Repair Kits, pages 12.
3.
See F
IG
. 2. Place the flats of the piston (15) in a
vise. Place the ball (10*) on the piston seat (E).
Screw the piston ball guide (9) onto the piston hand
tight, then torque as noted.
4.
See F
IG
. 4. Lubricate the throat packings (T). Install
the throat packings in the outlet housing (7) in the
correct order for your lower, see Repair Kits, pages
12-17. Install the v-packings (T) one at a time with
the lips facing down.
NOTE: To convert the lower to a different packing
material, see Repair Kits, pages 12-17.
5.
Lubricate the threads of the packing nut (2), and
loosely install it in the outlet housing (7).
6.
Lubricate the piston packings (P). Slide the
displacement rod (1) and piston assembly down into
the cylinder (8). The cylinder is symmetrical, so
either end may face up. Use a rubber mallet to drive
the rod into the cylinder, until the piston (15) is near
the bottom of the cylinder.
7.
Install the seal (24*) on the top of the cylinder (8).
Lubricate the seal and the top threads of the
cylinder.
8.
Place the outlet housing (7) in a vise, see F
Slide the rod (1) into the housing, apply anti seize
(19*) to threads, then screw the cylinder (8) into the
housing handtight. The threads will engage easily
until the seal (24*) contacts the sealing surface of
the outlet housing. The top of the rod will protrude
from the packing nut (2).
9.
See F
IG
. 4. Install the seal (24*) on the bottom of the
cylinder (8). Lubricate the seal and apply anti seize
(19*) to threads of the cylinder. With the beveled
ball stop surfaces (S) facing down, screw the
intake housing (16) onto the cylinder handtight. The
threads will engage easily until the seal (24*)
contacts the sealing surface of the intake housing.
10. See F
. 3. Install the seal (30*) on the intake valve
(18). Lubricate the seal and apply anti seize (19*) to
threads of the intake valve. Place the intake ball
(17*) in the intake housing (16), then screw the
intake valve (18) into the intake housing handtight.
The threads will engage easily until the seal (30*)
contacts the sealing surface of the intake housing.
11. Torque the intake housing (16) as noted in F
IG
. 4.
This will torque both cylinder joints A and B.
12. Torque the intake valve (18) as noted in F
IG
. 4.
13. Torque the packing nut (2) as noted in F
IG
. 4.
14. Reconnect the lower to the motor as explained in
your separate pump assembly manual.
NOTICE
All rebuild kits are supplied with anti-seize. Failure to
apply anti-seize during the reassembly process
greatly increases the chances of galling.
NOTICE
To reduce the possibility of costly damage to the rod
(1) and cylinder (8), always use a rubber mallet to
drive the rod into the cylinder. Never use a hammer to
drive the rod.
F
IG
. 3
